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题名: A Comparison of Growth on Mercuric Chloride for Three Lemnaceae Species Reveals Differences in Growth Dynamics That Effect Their Suitability for Use in Either Monitoring or Remediating Ecosystems Contaminated With Mercury
作者: Yang, Jingjing1; Li, Gaojie1; Bishopp, Anthony2; Heenatigala, P. P. M.1; Hu, Shiqi1; Chen, Yan1; Wu, Zhigang1; Kumar, Sunjeet1; Duan, Pengfei3; Yao, Lunguang3; Hou, Hongwei1
关键词: duckweed ; mercuric chloride ; toxicity test ; growth indices ; chemical composition ; biomonitoring ; bioremediation
刊名: FRONTIERS IN CHEMISTRY
发表日期: 2018-04-16
DOI: 10.3389/fchem.2018.00112
卷: 6
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Mercury (Hg) is a toxic heavy metal that can alter the ecological balance when it contaminates aquatic ecosystems. Previously, researchers have used various Lemnaceae species either to monitor and/or remove heavy metals from freshwater systems. As Hg contamination is a pressing issue for aquatic systems worldwide, we assessed its impact on the growth of three commonly species of Lemnaceae - Lemna gibba 6745, Lemna minor 6580 and Spirodela polyrhiza 5543. We exposed plants to different concentrations of mercuric chloride (HgCl2) and monitored their growth, including relative growth rate, frond number (FN), and fresh weight (FW). These data were coupled with measurements of starch content, levels of photosynthetic pigment and the activities of antioxidant substances. The growth of all three lines showed significant negative correlations with Hg concentrations, and starch content, photosynthetic pigment, soluble protein and antioxidant enzymes levels were all clearly affected. Our results indicate that the L. gibba line used in this study was the most suitable of the three for biomonitoring of water contaminated with Hg. Accumulation of Hg was highest in the S. polyrhiza line with a bioconcentration factor over 1,000, making this line the most suitable of the three tested for use in an Hg bioremediation system.
关键词[WOS]: INDUCED OXIDATIVE STRESS ; MINOR L. ; HEAVY-METALS ; AQUATIC MACROPHYTES ; AQUEOUS-SOLUTIONS ; PLANT-GROWTH ; GIBBA L. ; DUCKWEED ; CADMIUM ; COPPER
语种: 英语
项目资助者: State Key Laboratory of Freshwater Ecology and Biotechnology(2016FB04) ; Natural Science Foundation of Hubei Province(2015CFB488)
WOS记录号: WOS:000430090200001
ISSN号: 2296-2646
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/50924
Appears in Collections:水生生物分子与细胞生物学研究中心_期刊论文

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作者单位: 1.Univ Chinese Acad Sci, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol,Key Lab Aquat Biodivers & Conserva, Wuhan, Hubei, Peoples R China
2.Univ Nottingham, Ctr Plant Integrat Biol, Nottingham, England
3.Nanyang Normal Univ, Coll Agr Engn, Collaborat Innovat Ctr Water Secur Water Source R, Nanyang, Henan, Peoples R China
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